To be built where Lake Michigan and Chicago River are both visible, this building draws parallels with principles of biomimicry. Called Clean Technology Tower, it would have wind turbines positioned at its corners to harness wind energy. The density of the turbines increases as you go higher up the tower, as the wind speed also increases. A domed double roof cavity is built at the very top where wind speed is fastest, to create a wind farm, as well as use the negative energy generated for interior ventilation.

Other than its features designed for maximum wind harnessing, solar panels would also cover the dome at the top to capture energy from the southern sun. A total area of 1.8 million square feet will be dedicated for office space, while 300,000 square feet is meant for retail stores, a hotel, and a spa. According to MetaEfficient, this tower designed by Adrian Smith and Gordon Gill Architecture is an "evolution of Pearl River Tower" also by the same people involved. Not only eco-friendly, but also aesthetically pleasing (based on renders of the design), the Clean Technology Tower shows great promise I hope would still be improved upon in the future.

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